Engineering Materials in EE
The number of rings in the Bohr model of any element is determined by what?

 Row number on periodic table.
 Atomic number.
 Column number on periodic table.
 Atomic mass.

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Engineering Materials in EE
The Bohr model of the atom

 explained the color lines in the hydrogen spectrum.
 could not explain the line spectrum of atoms larger than hydrogen.
All of these
 had some made-up rules without explanations.

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